Golden Ratio Sash Windows and Doors London

Golden Ratio Sash Windows and Doors: London s Heritage Joinery Specialists. We preserve the architectural soul of London homes through expert restoration and bespoke timber joinery. Specializing in Victorian and Edwardian sash windows, casement windows, and high-security entrance doors, we balance traditional 19th-century aesthetics with 21st-century thermal performance. Our artisan services include bespoke stained glass design and our signature Stained Glass Encapsulation process, where heritage leadlights are restored and sealed within energy-efficient double glazing. From FENSA-compliant installations to delicate resin-based timber repairs and draught-proofing, our CSCS-qualified team ensures every project meets the Golden Ratio